Charles e



(No Model.)

0. E. PHILES.

' GRUSHING MILL.

- N0. 475,284-. Patented May 17, 1892.

Will/Illa -V//lllm UNITED STATES PATENT OFFIC CHARLES E. PHILES, OFSTOCKTON, CALIFORNIA, ASSIGNOR OF ONE-HALF TO JAMES JEROME SMITH, OFSAME PLACE.

CRUSHING-MILL.

SPECIFICATION forming part of Letters Patent No. 475,284, dated May 17,1892.

Serial No. 413.708. (No model.)

.To all whom it may concern.-

Be it known that I, CHARLES E. PHILES, a citizen of the United States,residing at Stockton, San Joaquin county, State of California, haveinvented an Improvement in Crushing- Mills; and I hereby declare thefollowing to be a full, clear, and exact description of the same.

My invention relates to that class of crushing-mills in whichcentrifugally-swinging rollers are employed, said rollers operating in apan and being pivotally hung from a revolving driver above.

My invention consists in the novel spring acting on the rollers to 'holdthem positively to their Work against the ring-die of the pan, as willbe hereinafter fully described, and specifically pointed out in theclaims.

The object of my invention is to provide a simple and elfective springfor this purpose which can be readily applied and easily removed toenable any roller to be taken out, said spring being durable and notliable to injury or deterioration due to the severe jar in the operationof the machine.

Referring to the accompanying drawing for a more complete explanation ofmy invention, the figure is a section of one side of a crushing-mill,showing one of the rollers in elevation and the attachment of my springto the roller connection.

A is the pan.

B is the central driving-shaft O, the driven frame, having sleeve-hub D.

E are the rollers having shaftsF and sleevejournals G pivotallyconnected with the driver, said parts constituting the well-known formof centrifugal crushingmill.

It has been found necessary to increase the efficiency of the machine toapply a spring of some form to hold the rollers positively to their workagainst the die. These springs yield sufliciently to allow the rollersto pass obstructions, but at the same time assist the centrifugal forcein holding them normally to their work. Many of the springs heretoforeused have been connected at their inner ends to the central portion ofthe machine and at their outer ends have borne upon the connections ofthe rollers. They have been usually flat springs secured in place bysuitable means, but have been open to the objections of being difficultto place, difficult to remove, and subject to crystallization due to thesevere jar in the operation of the machine. These objections are allovercome by my peculiar spring, which is as follows: It consists of twoleaves or members II II. These are bowed into elliptical shape, asshown, their ends being riveted together. Between their outer ends is aplate forming a lip h, extending straight outwardly and another plateforming a lip 72,, which projects vertically. At their inner ends aplate forming an upright arm 71 is bolted between them, the top of saidarm being bent inwardly, as shown at 72. A regulating-bolt I extendsbetween the separated centers of the leaves or members and is providedwith nuts 7; on each end, with interveningcushions of rubberz". Thisspring is placed in the machine by resting its upturned arm h againstthe sleeve-hub of the driver O and bolting its turned end 77, to saiddriver. Its outer end bears against the rollersuspending devices, itsstraight lip h passing under the lower end of the sleeve-journal, thusholding it in place, while its upturned end h bears against saidjournal. The tendency of the roller to bear inwardly has a separatingtendency upon the members or leaves of the spring,which is resisted bythem, thereby holding the roller well to place. The resiliency of thespring is assisted by the cushions, which also tend to preventcrystallization, and the tension of said spring is regulated by thenuts, so that said spring may be adjusted as the rollers and die were.This construction of spring is a durable and effect ive one. It can beeasily placed in position and very readily removed from its bearing on90. the roller by simply turning it to one side.

Having thus described my invention, What I claim as new, and desire tosecure by Letters Patent, is-

1. In a crushing-mill having centrifugally- 5 swinging rollers and acentral driving connection therefor, the horizontal springs for holdingthe rollers outwardly, consisting of the reversely-curved bowedseparated leaves or members connected at their inner ends with thedriving connection of the rollers and bearing at their outer ends on thesuspending connections thereof, substantially as herein described.

2. In a crushing-mill having centrifugallyswinging rollers and a centraldriving connection therefor, the horizontal springs for holding therollers outwardly, consisting of the reversely-bowed separated leaves ormemers connected at their inner ends with the driving connection of therollers and bearing at their outer ends on the suspending connectionsthereof, and the transverse central bolt and nuts for regulating thetension of the spring, substantially as herein described.

3. In a crushing-mill having centrifugallyswinging rollers and a centraldriving connection therefor, the horizontally-disposed springs forholding the rollers outwardly, consisting of the connectedreversely-bowed separated leaves or members connected at their innerends with the driving connection of the rollers and bearin g at theirouter ends on the suspended connections thereof, the transverse centralbolt having extended ends and nuts on said ends for regulating thetension of the spring, and the cushions on the ends of the bolt betweenthe leaves of said springs and the nuts, substantially as hereindescribed.

4. In a crushing-mill, the roller having the shaft and swingingsleeve-journal and the central drive-shaft and connected driver withsleeve-hub, in combination with the two-part or bowed spring havingsecured at its inner end the arm bearing on the sleeve-hub and bolted tothe driver and at its outer end the straight lip bearing under thesleeve-journal and the upturned lip bearing against it, substantially asherein described.

5. In a crushing-mill, the roller having the shaft and swingingsleeve-journal and the central drive-shaft and connected driver withsleeve-hub, in combination with the two-part or bowed spring havingsecured at its inner end the arm bearing against the sleeve-hub andbolted to the driver and at its outer end the straight lip bearing underthe sleeve-journal and the upturned lip bearing against it, and thetransverse adjusting-bolt, with nuts for regulating the tension of thespring,substantially as herein described.

6. In a crushing-mill, the roller having the shaft and swingingsleeve-journal and the central drive-shaft and connected driver withsleeve-hub, in combination with the two-part or bowed spring havingsecured at its inner end the arm bearing against the sleeve-hub andbolted to the driver and at its outer end the straight lip bearing underthe sleevejournal and the upturned lip bearing against it, and thetransverse adj Listing-bolt, with nuts for regulating the tension of thespring, and the cushions on the bolt ends between the spring and thenuts, substantially as herein described.

In witness whereof I have hereunto set my hand.

0. E. PHILES.

Witnesses:

F. F. CARNDUFF, W. O. CASTLE.

